Improvement in pumps



W a, 5 .my m e e M,

METERS, PHOTO-LITHOGRAPHER. WASHINGTON, D C.

dichiari gums CHARLES L. MERRILL, OF

wATEaToWN, NEW YORK.

Letters Patent No. 111,961', dated February 21, 1871.

IMPROVEMENT IN PUMPS.

The Schedule referred to in these Letters Patent and making part of the same.

I, CHARLES L. MERRILL, of Watertown, in the county of Jefferson, and State of New York, have invented certain Improvements in Pumps, of which the following is a specification. l

The nature of my invention consists in the construction and arrangement ot' certain devices so as to Yform an improved pump, all of which will be more fully described hereafter'.l

The object is to provide a pump of great simplicity, durability, not liable to get out of order, and can be manufactured very cheaply for general household purand over the end of said stock I arrange the cap provided with aA ange, b, and having a suitable hole in its center, through which' the lower end of the airvessel passes, and on the upper side ot" cap C is another flange, c, snugly fitting the air-vessel. The object of this cap is to prevent the stock from splitting or cracking.

To the lower end of the pump-stock I clamp thc chamber D by a staple-bolt, d.

' The lower head, E, of this chamber forms the scat of the foot-valve e, which is secured by the bolt plainly shown in fig. 3.

Through the head .Ii is cust hole e', serving for the suction.

On the upper side ofthe head is cast a narrow face, (or chipping strip,) which obviates the necessity 0f' finishing the whole face, and also prevents sand from accumulating on the scat of the valve, thereby cloggingit. i

The footvalve c is ot' a peculiar construction, being provided with the two hooks y y', Iig. 4, and a slot, h, into which the staple-shaped plate Hits, passing over the hooks g g and resting upon the seat.

Through the center ofthe plate e' the bolt f passes, as plainly seen in iig. 3, securing it to the seat; by it the liftof the valve is also regulated.

The upper part of the plunger Fis'of an increased diameter, being one-half of the area of the chamber, which makes it self-packing. i

The lower part forms the piston G, having the valve l' in the center, which is held in place by a hookbolt, m..

Tapped into the upper end of the plunger is the rod H, which is -connected to the pump-handle I, as shown at n., and the pump-handle is pivoted to the air-vessel at o.

In the side of'the upper end of the pump-chamber I arrange the hole K, which passes through the side of the stock and into the delivery-pipe L, connecting with the spout and air-chamber.

Haring thus fully described my invention,

What I claim, and desire to secure by Letters Patent of the United States, is l. rlhe combination ofthe pump-stock A with the flanged cap C and air-vessel B, when so arranged that the downward pressure ofthe air-vessel will cause the cap to grasp the periphery of the stock, so as to`prerent it from splitting, substantially as shown and described.

2. The foot-valve c, with hooks g y', plate t', and bolt f, in combination with the head E, having the raised .narrow face, constructed and arranged substantially as shown and described.

3. Ifhc combination and arrangement of the pumpchamber D, foot-valve e, plunger F, piston G, and valve `l, with the stock A, cap G, and air-vessel B, when all constructed and operated as shown, for the purpose set forth.

CHARLES L. MERRILL.

Witnesses I. S. STEWART, T. H..HARBIN. 

